CN220671485U - Electrical test tool for ultrahigh-voltage middle head stress cone - Google Patents
Electrical test tool for ultrahigh-voltage middle head stress cone Download PDFInfo
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- CN220671485U CN220671485U CN202322143228.3U CN202322143228U CN220671485U CN 220671485 U CN220671485 U CN 220671485U CN 202322143228 U CN202322143228 U CN 202322143228U CN 220671485 U CN220671485 U CN 220671485U
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- stress cone
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000004020 conductor Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an ultrahigh-voltage middle head stress cone electric test tool, and relates to the technical field of cable equipment. An electric test fixture for an ultrahigh-pressure middle head stress cone comprises a bracket; further comprises: a linear guide rail fixed on the bracket; a left clamp and a right clamp sliding on two sides of the linear guide rail; a stress cone bracket positioned between the left clamp and the right clamp and sliding on the linear guide rail; and a first linear driver and a second linear driver on the support; wherein the first linear driver is in driving connection with the left clamp; the second linear driver is in driving connection with the stress cone bracket. According to the ultra-high voltage middle head stress cone electric test tool, the cable can be ensured to move according to a preset linear track during cable assembly, the cable is prevented from deflecting in the direction in the moving process, and the inner wall of the middle head stress cone is prevented from being scratched; meanwhile, the utility model improves the operation efficiency and has good applicability.
Description
Technical Field
The utility model relates to the technical field of cable equipment, in particular to an ultrahigh-voltage middle head stress cone electric test tool.
Background
The middle head stress cone is an important cable device and is mainly used for connecting an ultra-high voltage cable; the middle head stress cone mainly plays roles of isolating strong current of a cable conductor, homogenizing an electric field and protecting broken ends of an internal cable in cable connection.
Because the middle head stress cone is a component of a closing member for connecting an ultrahigh voltage cable, and most cable products run under outdoor conditions, the middle head stress cone is extremely easy to be influenced by external climate change and uncertain short-time strong current; thus, if the middle head should be slightly of quality, serious damage to the entire power system will occur.
In order to control the product quality of the middle head stress cone, an electric partial discharge test is required to be carried out when the middle head stress cone is produced so as to detect the electric performance of the middle head stress cone; when the middle head stress cone is used for carrying out an electric partial discharge test, two sections of ultra-high voltage cables are connected to two ends of the middle head stress cone to carry out an electrifying test.
At present, the assembly of the middle head stress cone and the ultra-high voltage cable is usually carried out by a lever block, and the specific process is as follows: the cable is pulled by the two lever blocks through the binding bands, and meanwhile, the cable is pulled in one direction, so that the front end of the ultra-high voltage cable forcefully penetrates into the middle head stress cone, and the assembly operation of the middle head stress cone and the ultra-high voltage cable is completed.
For the above operation, the inventors consider that there are the following technical problems: when the two lever blocks are operated, the operation pulling force of the two lever blocks is difficult to balance, and the direction of the ultra-high voltage cable is possibly deflected in the process of penetrating into the middle head stress cone, so that the inner wall of the middle head stress cone is scratched; meanwhile, the operation requires cooperation of multiple people, and the efficiency is low.
Therefore, how to solve the above problems, design an electric test tool for an ultrahigh voltage middle head stress cone, which can prevent the inner wall of the middle head stress cone from being scratched and improve the working efficiency, is a technical problem that needs to be solved by those skilled in the art.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
Aiming at the technical problems, the embodiment of the utility model provides an ultrahigh-voltage middle head stress cone electric test tool for solving the problems in the background technology.
The utility model provides the following technical scheme:
an electric test fixture for an ultrahigh-pressure middle head stress cone comprises a bracket; further comprises:
a linear guide rail fixed on the bracket;
a left clamp and a right clamp sliding on two sides of the linear guide rail;
a stress cone bracket positioned between the left clamp and the right clamp and sliding on the linear guide rail; the method comprises the steps of,
a first linear driver and a second linear driver positioned on the bracket;
wherein the first linear driver is in driving connection with the left clamp; the second linear driver is in driving connection with the stress cone bracket.
Preferably, the left clamp and the right clamp slide on the linear guide rail through the base sliding blocks respectively; and the left clamp and the right clamp have the same structure.
Preferably, the left clamp comprises an upper left clamp and a lower left clamp which are spliced up and down, and the upper left clamp and the lower left clamp are connected through vertical screws.
Preferably, the stress cone bracket comprises a supporting plate, limiting plates fixed on two sides of the supporting plate and a guide rail sliding block fixed at the bottom of the supporting plate;
wherein, the limiting plate is provided with a cable via hole; and the stress cone bracket slides on the linear guide rail through the guide rail sliding block.
Preferably, a baffle ring coaxially arranged with the cable through hole is arranged on the inner side of the limiting plate.
Preferably, the two ends of the bracket are respectively provided with a first vertical plate and a second vertical plate; the first riser is located the left anchor clamps outside, and the second riser is located the right anchor clamps outside.
Preferably, the tops of the first vertical plate and the second vertical plate are respectively provided with an arc-shaped groove.
Preferably, one end of the first linear actuator is connected with the left clamp, and the other end of the first linear actuator is connected with the first vertical plate.
Preferably, one end of the second linear actuator is connected with the stress cone bracket, and the other end of the second linear actuator is connected with the second vertical plate.
Preferably, the left cable guide wheel and the right cable guide wheel are respectively arranged at two ends of the bracket.
The ultrahigh-voltage middle head stress cone electrical test tool provided by the embodiment of the utility model has the following beneficial effects: according to the ultra-high voltage middle head stress cone electric test tool, the cable can be ensured to move according to a preset linear track during cable assembly, the cable is prevented from deflecting in the direction in the moving process, and the inner wall of the middle head stress cone is prevented from being scratched; meanwhile, the utility model improves the operation efficiency and has good applicability.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model at an angle I;
FIG. 2 is a schematic view of the structure of the second angle of the present utility model;
FIG. 3 is a schematic view of the structure of the stress cone bracket according to the present utility model;
FIG. 4 is an enlarged view of a portion of FIG. 1A in accordance with the present utility model;
FIG. 5 is a schematic view of a first connecting tube according to the present utility model;
FIG. 6 is an exploded view of a first connector tube according to the present utility model;
FIG. 7 is a schematic view of a second connecting tube according to the present utility model;
FIG. 8 is an exploded view of a second connecting tube according to the present utility model;
FIG. 9 is a schematic view of the structure of the seeker of the present utility model;
FIG. 10 is a schematic illustration of an assembly operation performed in accordance with the present utility model;
FIG. 11 is a schematic diagram of a second embodiment of the present utility model;
FIG. 12 is a schematic illustration of an assembly operation III of the present utility model;
fig. 13 is a schematic diagram of a fourth assembly operation performed by the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of the present utility model.
An embodiment I, an electric test fixture for an ultrahigh-voltage middle head stress cone; see fig. 1-4.
Aiming at the problems mentioned in the background art, the embodiment of the utility model provides an ultrahigh-voltage middle head stress cone electric test tool, which solves the technical problems and has the following technical scheme:
an ultra-high voltage middle head stress cone electrical test tool comprises a bracket 110;
specifically, the bracket 110 includes two crossbars with parallel tops and legs fixed to the bottoms of the crossbars; a plurality of connecting rods are connected between the cross bars, and reversing rollers 111 are arranged at the bottoms of the cross bars;
further comprises:
a linear guide rail 120 fixed to the bracket 110; the two cross bars are respectively provided with a linear guide rail 120;
a left clamp 150 and a right clamp 160 sliding on both sides of the linear guide 120; the left clamp 150 and the right clamp 160 are used for clamping two sections of extra-high voltage cables on two sides;
a stress cone bracket 180 located between the left clamp 150 and the right clamp 160 and sliding on the linear guide 120; the method comprises the steps of,
a first linear driver 171 and a second linear driver 172 provided on the bracket 110;
wherein the first linear driver 171 is drivingly connected to the left clamp 150; the second linear drive 172 drives the connecting stress cone bracket 180; preferably, the first linear actuator 171 and the second linear actuator 172 are oil cylinders.
In this embodiment, the left clamp 150 and the right clamp 160 slide on the linear guide rail 120 through the base slide block 141, respectively; and the left clamp 150 and the right clamp 160 are identical in structure.
In this embodiment, the left clamp 150 includes an upper left clamp 152 and a lower left clamp 151 that are vertically spliced, and the upper left clamp 152 and the lower left clamp 151 are connected by vertical screws; wherein, the inner wall of upper left clamp 152, lower left clamp 151 is provided with many slots, and the cable is prevented from skidding on the anchor clamps to the setting of slot.
In this embodiment, the right clamp 160 includes an upper right clamp and a lower right clamp that are vertically spliced, and the upper right clamp and the lower right clamp are connected by vertical screws; the inner walls of the upper right clamp and the lower right clamp are provided with a plurality of grooves, and the grooves can prevent the cable from slipping in the jacket.
It should be noted that, can match corresponding anchor clamps or change the cover in the anchor clamps according to the cable of different external diameters, ensure that the cable of different diameters can all use this frock to assemble with middle head stress cone, improve the suitability of this frock.
In this embodiment, the stress cone bracket 180 includes a supporting plate 182, limiting plates 183 fixed on both sides of the supporting plate 182, and a guide rail slider 181 fixed on the bottom of the supporting plate 182;
the limiting plate 183 is provided with a cable through hole 183a, the cable through hole 183a is used for passing the ultra-high voltage cable, and the cable through hole 183a is coaxially arranged with the clamping hole of the left clamp 150 and the clamping hole of the right clamp 160; at the same time, the stress cone bracket 180 slides on the linear guide 120 through the guide slider 181.
In this embodiment, the connecting rod 184 is connected between the limiting plates 183 on both sides, and the connecting rod 184 is provided to improve the structural stability of the stress cone bracket 180 and also to limit the position of the placed stress cone bracket 180.
In this embodiment, a stop ring 183b coaxially disposed with the cable through hole 183a is disposed inside the limiting plate 183; two stop rings 183b inside the stop plate 183 are used to clamp the mid-head stress cone 400.
In this embodiment, a first vertical plate 191 and a second vertical plate 192 are respectively disposed at two ends of the bracket 110; the first vertical plate 191 is located outside the left clamp 150, and the second vertical plate 192 is located outside the right clamp 160; the first and second risers 191 and 192 serve as brackets for the extra-high voltage cables.
In this embodiment, arc grooves are formed at the top of the first vertical plate 191 and the second vertical plate 192; the arc-shaped groove is used for bearing the ultra-high voltage cable.
In this embodiment, one end of the first linear actuator 171 is connected to the left clamp 150, and the other end is connected to the first vertical plate 191; specifically, the base of the first linear actuator 171 is fixed to the base slider 141 at the bottom of the left clamp 150, and the driving end thereof is fixed to the first vertical plate 191.
In this embodiment, one end of the second linear actuator 172 is connected to the stress cone bracket 180, and the other end is connected to the second vertical plate 192; specifically, the base of the second linear actuator 172 is fixed to the second vertical plate 192, and the driving end thereof is fixedly connected to the stress cone bracket 180.
In this embodiment, a left cable guide pulley 131 and a right cable guide pulley 132 are respectively disposed at two ends of the bracket 110; left and right cable guide pulleys 131 and 132 are provided for rollingly supporting the left and right cables.
In the second embodiment, the ultra-high voltage cable is assembled with the middle head stress cone; see fig. 10-13.
The specific method for assembling the middle head stress cone and the cable comprises the following steps:
s1, stripping and cutting the connection part of a left cable 220 and a right cable 210 until an insulating layer of the cable is exposed;
s2, stripping and cutting the end parts of the insulating layers of the left cable 220 and the right cable 210 to expose the metal conductors at the end parts of the cables;
s3, connecting pipes are fixedly connected to the metal conductors of the left cable 220 and the right cable 210 respectively;
s4, fixedly connecting a guide head 330 on a connecting pipe of the right cable 210;
s5, placing the middle head stress cone 400 into the stress cone bracket 180;
s6, mounting the right cable 210 in the step S4 on the right clamp 160, and fixing the right clamp 160 on the linear guide rail 120 through screws;
s7, controlling the second linear driver 172 to work, pulling the stress cone bracket 180 to move until the right cable 210 passes into the middle head stress cone 400, and enabling the guide head 330 to be outside the middle head stress cone 400; as shown in fig. 10;
s8, removing the guide head 330 on the right cable 210;
s9, mounting the left cable 220 in the step S3 on the left clamp 150; as shown in fig. 11;
s10, controlling the first linear driver 171 to work, and pushing the left cable 220 to move until the connecting pipe on the left cable 220 is in contact connection with the connecting pipe on the right cable 210; as shown in fig. 12;
s11, measuring the distance L from the central positions of the two connecting pipes to the central position of the middle head stress cone 400, controlling the second linear driver 172 to work, pushing the stress cone bracket 180 to move the distance L, adjusting the central positions of the two connecting pipes to be aligned with the positions of the middle head stress cone 400, and completing the assembly of the cable and the middle head stress cone 400; as shown in fig. 13.
After the left cable 220, the right cable 210 and the middle head stress cone 400 are assembled in place, a layer of copper woven mesh is wound on the outer surfaces of the middle head stress cone 400 and the right cable 210 to serve as a grounding conductor, residual charges on the outer surfaces of the stress cones are eliminated, and then the electric partial discharge test is performed by electrifying;
meanwhile, after the test is finished, the copper mesh is removed, the first linear driver 171 is operated to withdraw the left cable 220, the second linear driver 172 is operated again, and the middle head stress cone 400 is withdrawn from the right cable 210.
Third embodiment, the structure of the connecting tube and the seeker; see fig. 5-9.
In this embodiment, the connection pipes include a first connection pipe 310 and a second connection pipe 320; the first connecting pipe 310 and the second connecting pipe 320 are made of red copper;
wherein, the first connection pipe 310 is connected with the left cable 220, and the second connection pipe 320 is connected with the right cable 210;
the first connection pipe 310 includes a first inner pipe 311 and a first outer pipe 312; the outer ring of the first inner pipe 311 is provided with external threads, the inner ring of the first outer pipe 312 is provided with internal threads, and the first outer pipe 312 is in threaded connection with the first inner pipe 311; wherein the thread is not shown in the figures.
The second connection pipe 320 includes a second inner pipe 321 and a second outer pipe 322; the outer ring of the second inner pipe 321 is provided with external threads, the inner ring of the second outer pipe 322 is provided with internal threads, and the second outer pipe 322 is in threaded connection with the second inner pipe 321; wherein the thread is not shown in the figures.
The head of the second outer tube 322 is provided with a positioning plug 322a, and the positioning plug 322a is used for being inserted into a positioning hole of the first connecting tube 310 to realize contact connection of the first connecting tube 310 and the second connecting tube 320.
The head of the guiding head 330 is conical, the tail of the guiding head 330 is provided with a slot 330a matched with the positioning plug 322a, and the guiding head 330 is inserted into the positioning plug 322a of the second connecting pipe 320 through the slot 330a at the tail.
In this embodiment, the guide head 330 is made of nylon, and a metal guide head cannot be used; since the chip is prevented from remaining in the nose stress cone during the pilot assembly by means of the pilot head 330, a test discharge is caused and the test fails.
Note that, the first connection pipe 310 and the second connection pipe 320 are connected to the left cable 220 and the right cable 210 in the same manner, and the following description describes a connection method of the first connection pipe 310 and the left cable 220:
the length of the first inner tube 311 is 6-7mm longer than the length of the stripped conductor, so that the first inner tube 311 can conveniently press the end part of the insulating layer; meanwhile, the first inner tube 311 is provided with 4 screw holes uniformly distributed on the circumference, the metal conductor of the cable one 220 is tightly pressed by the pressing screw, looseness between the first inner tube 311 and the conductor is prevented, and the first outer tube 312 is screwed on the first inner tube 311 through threads.
By connecting the connection pipe at the joint of the left cable 220 and the right cable 210, the purpose is to provide a stable connection at the joint of the two cables, preventing the conductor from bending, loosening or breaking; meanwhile, the connecting pipe also has good conductivity, so that the conductivity of the joint of the two sections of cables is stable; in addition, by providing the connection pipe on the right cable 210, it is also convenient to fixedly connect the seeker through the connection pipe.
The ultrahigh-voltage middle head stress cone electrical test tool provided by the embodiment of the utility model has the following beneficial effects: according to the ultra-high voltage middle head stress cone electric test tool, the cable can be ensured to move according to a preset linear track during cable assembly, the cable is prevented from deflecting in the direction in the moving process, and the inner wall of the middle head stress cone is prevented from being scratched; meanwhile, the utility model improves the operation efficiency and has good applicability.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may or may not be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present teachings and concepts, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the accompanying claims.
Claims (10)
1. An electric test fixture for an ultrahigh-pressure middle head stress cone comprises a bracket; characterized by further comprising:
a linear guide rail fixed on the bracket;
a left clamp and a right clamp sliding on two sides of the linear guide rail;
a stress cone bracket positioned between the left clamp and the right clamp and sliding on the linear guide rail; the method comprises the steps of,
a first linear driver and a second linear driver positioned on the bracket;
wherein the first linear driver is in driving connection with the left clamp; the second linear driver is in driving connection with the stress cone bracket.
2. The ultra-high voltage middle head stress cone electrical test fixture according to claim 1, wherein the left clamp and the right clamp slide on the linear guide rail through base sliding blocks respectively; and the left clamp and the right clamp have the same structure.
3. The ultrahigh-voltage middle head stress cone electrical test tool according to claim 2, wherein the left clamp comprises an upper left clamp and a lower left clamp which are spliced up and down, and the upper left clamp and the lower left clamp are connected through vertical screws.
4. The ultra-high voltage middle head stress cone electrical test fixture according to claim 1, wherein the stress cone bracket comprises a supporting plate, limiting plates fixed on two sides of the supporting plate, and a guide rail sliding block fixed on the bottom of the supporting plate;
wherein, the limiting plate is provided with a cable via hole; and the stress cone bracket slides on the linear guide rail through the guide rail sliding block.
5. The ultrahigh-voltage middle head stress cone electrical test tool according to claim 4, wherein a baffle ring coaxially arranged with the cable via hole is arranged on the inner side of the limiting plate.
6. The ultra-high voltage middle head stress cone electrical test tool according to claim 1, wherein a first vertical plate and a second vertical plate are respectively arranged at two ends of the bracket; the first riser is located the left anchor clamps outside, and the second riser is located the right anchor clamps outside.
7. The ultrahigh-voltage middle head stress cone electrical test tool according to claim 6, wherein arc grooves are formed in the tops of the first vertical plate and the second vertical plate.
8. The tool for electric testing of ultrahigh-voltage middle head stress cone according to claim 6, wherein one end of the first linear driver is connected with the left clamp, and the other end of the first linear driver is connected with the first vertical plate.
9. The ultrahigh-voltage middle head stress cone electrical test fixture according to claim 6, wherein one end of the second linear driver is connected with the stress cone bracket, and the other end of the second linear driver is connected with the second vertical plate.
10. The ultrahigh-voltage middle head stress cone electrical test fixture according to claim 1, wherein a left cable guide wheel and a right cable guide wheel are respectively arranged at two ends of the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322143228.3U CN220671485U (en) | 2023-08-10 | 2023-08-10 | Electrical test tool for ultrahigh-voltage middle head stress cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322143228.3U CN220671485U (en) | 2023-08-10 | 2023-08-10 | Electrical test tool for ultrahigh-voltage middle head stress cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220671485U true CN220671485U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322143228.3U Active CN220671485U (en) | 2023-08-10 | 2023-08-10 | Electrical test tool for ultrahigh-voltage middle head stress cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220671485U (en) |
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2023
- 2023-08-10 CN CN202322143228.3U patent/CN220671485U/en active Active
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